LS 7B - Week 3 - PEQs

E.) second-division nondisjunction.

A normal XY male has a son with the karyotype XYY. The likely explanation is: A.) translocation. B.) copy-number variation. C.) first-division nondisjunction. D.) dosage compensation. E.) second-division nondisjunction.

A.) 29, 29, 27, 27.

Diploid somatic cells of elephants have 56 chromosomes. If nondisjunction of one of an elephant's chromosomes occurs in meiosis I, the resulting sperm are expected to have the chromosome complement: A.) 29, 29, 27, 27. B.) 28, 28, 28, 28. C.) 29, 29, 28, 28. D.) 56, 56, 57, 55. E.) 28, 28, 29, 27.

B.) lane B

Shown are two alleles of a single-nucleotide polymorphism (SNP), one of which is associated with a higher risk of developing high blood pressure (hypertension). Normal allele: 5′-ATTCGCGGAATTCTGG-3′ 3′-TAAGCGCCTTAAGACC-5′ Allele associated with hypertension: 5′-ATTCGCGGGATTCTGG-3′ 3′-TAAGCGCCCTAAGACC-5′You amplify DNA from multiple patients at a cardiologist's office and digest each with EcoRI in order to determine the patients' genotypes for this SNP. EcoRI recognizes the sequence shown and cuts each strand at the locations indicated by the arrows. In the gel shown, which lane represents an individual heterozygous for the hypertension allele? A.) lane A B.) lane B C.) lane C D.) lane D E.) lane E

A.) lane A

Shown are two alleles of a single-nucleotide polymorphism (SNP), one of which is associated with a higher risk of developing high blood pressure (hypertension). Normal allele: 5′-ATTCGCGGAATTCTGG-3′ 3′-TAAGCGCCTTAAGACC-5′ Allele associated with hypertension: 5′-ATTCGCGGGATTCTGG-3′ 3′-TAAGCGCCCTAAGACC-5′You amplify DNA from multiple patients at a cardiologist's office and digest each with EcoRI in order to determine the patients' genotypes for this SNP. EcoRI recognizes the sequence shown and cuts each strand at the locations indicated by the arrows. In the gel shown, which lane represents an individual homozygous for the hypertension allele? A.) lane A B.) lane B C.) lane C D.) lane D E.) lane E

C.) lane C

Shown are two alleles of a single-nucleotide polymorphism (SNP), one of which is associated with a higher risk of developing high blood pressure (hypertension). Normal allele: 5′-ATTCGCGGAATTCTGG-3′ 3′-TAAGCGCCTTAAGACC-5′ Allele associated with hypertension: 5′-ATTCGCGGGATTCTGG-3′ 3′-TAAGCGCCCTAAGACC-5′You amplify DNA from multiple patients at a cardiologist's office and digest each with EcoRI in order to determine the patients' genotypes for this SNP. EcoRI recognizes the sequence shown and cuts each strand at the locations indicated by the arrows. In the gel shown, which lane represents an unaffected individual? A.) lane A B.) lane B C.) lane C D.) lane D E.) lane E

B.) lane B

Shown are two alleles of a single-nucleotide polymorphism (SNP), one of which is associated with a higher risk of developing high blood pressure (hypertension). Normal allele: 5′-ATTCGCGGAATTCTGG-3′ 3′-TAAGCGCCTTAAGACC-5′ Allele associated with hypertension: 5′-ATTCGCGGGATTCTGG-3′ 3′-TAAGCGCCCTAAGACC-5′You amplify DNA from multiple patients at a cardiologist's office and digest each with EcoRI in order to determine the patients' genotypes for this SNP. EcoRI recognizes the sequence shown and cuts each strand at the locations indicated by the arrows. Which lane in the gel represents an individual heterozygous for this SNP? A.) lane A B.) lane B C.) lane C D.) lane D E.) lane E

A.) it could respond the same way or differently; different genotypes can, but may not always, respond differently to soil nitrogen

The data shown are the results of growing one strain of a crop plant in soils with different nitrogen concentrations.If a different strain of the same crop plant were grown in the same soil conditions, you would predict that: A.) it could respond the same way or differently; different genotypes can, but may not always, respond differently to soil nitrogen concentrations. B.)it would respond the same way to soil nitrogen concentrations because they are the same type of crop plant. C.) it would respond completely differently to soil nitrogen concentrations because they are different strains. D.) it could respond the same way or differently because the environment has too many variables to predict.

A.) trait L

Which of the traits depicted in the graph shown has the lowest heritability? A.) trait L B.) trait H C.) trait M D.) trait K

[X]a line of dairy cows that increases milk yield in relation to feed amount [X]a strain of corn whose yield varies with the amount of nutrients in the soil

Which of the examples would be good examples of genotype-by-environment interactions? Select all that apply. []two different strains of corn that differ in height due to genotype []two different mutants of mice that share similar fat metabolism abilities []a line of dairy cows that increases milk yield in relation to feed amount []a strain of corn whose yield varies with the amount of nutrients in the soil []a strain of mutant mice that becomes obese regardless of feed amount []a line of chickens whose eggshells are extra thick regardless of feed type